|Eye color||Light green|
|Hair color||Grayish Blue|
|Hometown||Eterna City (Originally)|
|Trainer class||Pokémon Researcher|
Sienna (Japanese: サトミ Satomi) is Ashe's mother.
Sienna was born and raised in Eterna City. Sometime later, she met Kylan and moved to Twinleaf Town when she had Tobias and Ashe.
She is a Pokémon Researcher who studies the relationship between the environment and Pokémon adaptation.
Sienna looks like a older version of Ashe with light green eyes and slightly shorter hair that is tied in a side braid.
Sienna has a similar personality to her daughter but more outgoing and friendly.
She cares for her family very much and was very saddened to see Ashe leave as she was the only member of her family still with her since her husband's job takes him out of the region a lot and her son is still traveling on his journey. Even so, she understands the responsibilities that they carry as well as her own.
|Sienna's only known Pokémon so far. Umbreon's known moves are Pursuit, Quick Attack, Faint Attack, Shadow Ball, and Dark Pulse.|